Electric motor with a coil arrangement for providing oscillatory linear and rotational movement
First Claim
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1. An electric motor for a small-scale electrical appliance comprising:
- at least one oscillatory motor component;
a magnet arrangement having a first segment and a second segment, each of which includes at least one permanent magnet; and
a coil arranged to generate a magnetic field that interacts with the first segment to generate a force for excitation of an oscillatory linear motion, and that interacts with the second segment to generate a torque for excitation of an oscillatory rotational motion in addition to the linear motion.
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Abstract
An electric motor for a small-scale electrical appliance, such as a toothbrush or shaver. The electric motor includes at least one oscillatory motor component, a magnet arrangement having at least one permanent magnet, and a coil for generating a magnetic field which, in interaction with the magnet arrangement, generates a force for excitation of an oscillatory linear motion. During the interaction between the magnet arrangement and the magnetic field produced by the coil, a torque for excitation of an oscillatory rotational motion is additionally generated.
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Citations
23 Claims
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1. An electric motor for a small-scale electrical appliance comprising:
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at least one oscillatory motor component; a magnet arrangement having a first segment and a second segment, each of which includes at least one permanent magnet; and a coil arranged to generate a magnetic field that interacts with the first segment to generate a force for excitation of an oscillatory linear motion, and that interacts with the second segment to generate a torque for excitation of an oscillatory rotational motion in addition to the linear motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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- 11. The electric motor according to claim l0, wherein at least one outer functional segment arranged in an axial end area includes one set of permanent magnets for excitation of an oscillatory linear motion.
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22. A method of operating an electric motor having at least one oscillatory motor component, the method comprising:
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generating a force for excitation of an oscillatory linear motion of a motor component by inducing a magnetic field in a coil, the magnetic field interacting with a first segment of a magnet arrangement, the first segment having at least one permanent magnet; and generating a torque for excitation of an oscillatory rotational motion through interaction of the magnetic field and a second segment of the magnet arrangement, the second segment having at least one permanent magnet. - View Dependent Claims (23)
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Specification